Cole and Mason Windsor Gourmet 8-Inch Salt Mill, Black Gloss Wood Premium Gourmet Windsor mills feature superior grinding mechanisms and are hand sanded to give an ultra smooth finish All our wooden mills are 100% beech sourced from sustainable forests Salt grinding mechanism is made from diamond-sharp ceramic that is non-allergenic, odor free and hygenic for milling of salt and spices Spring loaded mechanism gives consistency of grind Fully adjustable mechanism for grinding salt from fine to coarse